The 90635-1202 is a 20-way 2-row QF-50? Single Beam Socket with 0.76μm gold-plated (Au) contacts, vertical MIL/DIN version, 1.27mm pitch, 90° angle and black polyester housing. For use with 90170 header. This female crimp housing is suitable for signal and wire-to-board. Mates with 90663 strain relief.